URO 31331128523 Coil Spring Shim - Front Upper

Coil Spring Shim for BMW and Mini Front Upper Suspension

This URO coil spring shim restores the front upper spring seat on select BMW and Mini models. It is a direct-fit OE-style replacement for applications where the original shim is broken, missing, or no longer supporting the spring correctly.

Built from SBR material in black, this shim measures 111.09 mm inside diameter and 145.07 mm outside diameter. The 3 mm thickness helps restore proper ride height and spring load bearing capability on BMW 3 Series, 5 Series, 7 Series, X3, Z3, and Mini Cooper applications.

• OE-style coil spring shim for front upper suspension use
• SBR construction in black for resilient suspension support
• Helps restore spring load bearing capability and ride height
• Helps reduce clunking caused by a damaged or missing shim
• Helps protect the suspension from bottom-out impacts
• Guaranteed fitment for listed BMW and Mini applications
• Part number 31331128523 for easy identification

Detailed Product Overview

URO 31331128523 is a front upper coil spring shim made to match factory-style fit and function. It is used in suspension hardware applications where the spring seat needs to be restored to proper height and support. This part cross-references BMW OE number 31 33 1 128 523 and URO-014913 for the same application. For BMW and Mini owners addressing front suspension noise or uneven spring support, 31331128523 provides a direct replacement path.

Common Issues This Part Can Address

• Clunking or knocking from the front suspension on rough roads
• Broken or missing coil spring shim at the upper spring seat
• Loss of proper spring support and ride height
• Suspension contact from bottom-out impacts
• Factory spring seat wear on older BMW and Mini front suspension systems

Installation Notes and Fitment Tips

Compatible with front upper suspension positions only. Fits 2011-2016 Mini Cooper Countryman, front upper; 2013-2016 Mini Cooper Paceman, front upper; 2003-2015 Mini Cooper, front upper; 2004-2010 BMW X3, front upper; and 1996-2002 BMW Z3, front upper. Additional fitment includes select BMW 318i, 318is, 318ti, 323i, 323is, 325e, 325es, 325i, 325iX, 325is, 328i, 328is, 524td, 525i, 528e, 533i, 535i, 535is, 540i, 635CSi, 735i, 735iL, 740i, 740iL, 750iL, M3, and M5 applications. Verify production date notes where listed, including 2002 Mini Cooper from 03/02 and 1995 BMW 540i from 09/95.

Because this is a suspension shim, proper seating and alignment with the spring perch are important during installation. Confirm the vehicle’s front upper spring hardware matches the listed 3 mm specification before replacement.

Quality Assurance

This URO coil spring shim is backed by a 24 Month Unlimited Mileage Warranty. It is engineered as an OE-style replacement for factory function on the listed BMW and Mini applications.